论文标题
重力波传播上超轻矢量场的烙印
The imprint of ultralight vector fields on gravitational wave propagation
论文作者
论文摘要
我们研究了超轻载体场（ULVF）暗物质对重力波传播的影响。我们发现，与$λ$ CDM的预测相比，向量场的连贯振荡引起了对重力波振幅的各向异性抑制。对于较小的矢量场质量和峰值的峰值，对于$ k = h_0/\ sqrt {a（h = m）} $，效果得到了增强。对于天体物理产生的重力波而言，这种抑制可以忽略不计，但对于原始重力波可能很大。我们讨论了使用未来CMB B模式极化检测器检测到对张量功率谱的影响的可能性。我们发现，对于即将到来的LiteBird任务的敏感性，可以在解耦时对张量功率谱的校正与ULVF Masses $ M \ Lessim 10^{ - 26} $ EV的$λ$ CDM的校正可以区分。
We study the effects of ultralight vector field (ULVF) dark matter on gravitational-wave propagation. We find that the coherent oscillations of the vector field induce an anisotropic suppression of the gravitational-wave amplitude as compared to the $Λ$CDM prediction. The effect is enhanced for smaller vector field masses and peaks for modes around $k=H_0/\sqrt{a(H=m)}$. The suppression is negligible for astrophysically generated gravitational waves but could be sizeable for primordial gravity waves. We discuss the possibility of detecting such an effect on the tensor power spectrum with future CMB B-mode polarization detectors. We find that for the sensitivity of the upcoming LiteBIRD mission, the correction to the tensor power spectrum at decoupling time could be distinguishable from that of $Λ$CDM for ULVF masses $m\lesssim 10^{-26}$ eV and sufficiently large abundances.
